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The association of dietary intakes with blood pressure levels was examined in a cross-sectional sample of 805 men aged 40-69 years free from clinical hypertension, coronary heart disease or cancer. After controlling for age, body habitus, and alcohol consumption, blood pressure levels were inversely associated with the intake of fruit (r = -0.09, p less than 0.05, for both systolic (SBP) and diastolic (DBP) blood pressure) and of fruit fibre (r = -0.07, p = 0.05 for SBP; r = -0.07, p = 0.07 for DBP). This association was independent of the intake of minerals and fibre from other sources. Calcium and magnesium intake were not significantly associated with blood pressure levels, but our results are statistically compatible with the modest inverse associations previously reported. These cross-sectional data suggest that some component of fruit has a blood pressure lowering effect.
Ascherio et al. (Tue,) studied this question.